Thanks for your latest line drawing smithjohnj, It helped me with matching a couple of possible points.

I see the large wheel having a spool-like effect on it, very similar to an old tape reel. Except instead of the spool being
opened, it's enclosed and the spokes are cutout. I also think there should be four spokes instead of the three
I mocked up.

I see the large wheel having a spool-like effect on it, very similar to an old tape reel. Except instead of the spool being
opened, it's enclosed and the spokes are cutout. I also think there should be four spokes instead of the three
I mocked up.
One more tough one to go. I took some direction from @olsm and thought about hard drive internals. I did not do any detailed research as I did not want that to bias what the photos were showing me. Like last time my diagram is just to continue the discussion. I do not have any special insight.
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